true or false
(1) non metal react with oxygen to from
alkaline oxides.
2 sulphur dioxide when mixed with air, pollutes it.
(3) the percentage of oxygen in air is 10 percent.
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Answer:
1. Correct Statement: Metals react with oxygen to form basic oxides and non metals react with oxygen to form acidic oxides.
2. Like nitrogen dioxide, sulfur dioxide can create secondary pollutants once released into the air. Secondary pollutants formed with sulfur dioxide include sulfate aerosols, particulate matter, and acid rain.
3. While oxygen is necessary for most life on Earth, the majority of Earth's atmosphere is not oxygen. Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases.
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